telnet - basic telnet client

Property Value
Distribution Ubuntu 18.04 LTS (Bionic Beaver)
Repository Ubuntu Main amd64
Package name telnet
Package version 0.17
Package release 41
Package architecture amd64
Package type deb
Installed size 161 B
Download size 65.51 KB
Official Mirror
The telnet command is used for interactive communication with another host
using the TELNET protocol.
For the purpose of remote login, the present client executable should be
depreciated in favour of an ssh-client, or in some cases with variants like
telnet-ssl or Kerberized TELNET clients.  The most important reason is that
this implementation exchanges user name and password in clear text.
On the other hand, the present program does satisfy common use cases of
network diagnostics, like protocol testing of SMTP services, so it can
become handy enough.


Package Version Architecture Repository
telnet_0.17-41_i386.deb 0.17 i386 Ubuntu Main
telnet - - -


Name Value
libc6 >= 2.15
libstdc++6 >= 5
netbase -


Name Value
telnet-client -


Name Value
netstd -


Type URL
Binary Package telnet_0.17-41_amd64.deb
Source Package netkit-telnet

Install Howto

  1. Update the package index:
    # sudo apt-get update
  2. Install telnet deb package:
    # sudo apt-get install telnet




2016-11-07 - Mats Erik Andersson <>
netkit-telnet (0.17-41) unstable; urgency=low
* Declare Standards version as 3.9.8, no changes.
* Rework cross-compilation mechanism, suggested by Helmut Grohne.
Closes: #835977
+ debian/patches/150-cross_configuration.diff: New file.
+ debian/rules: Drop CROSS, prefer CC and CXX with host type prefix.
* debian/rules: Increase hardening level.
* debian/telnet.lintian-overrides: New name of old file.
Add overrides concerning `wont'.
* debian/telnetd.lintian-overrides: Add `wont' clauses.
2015-04-27 - Mats Erik Andersson <>
netkit-telnet (0.17-40) unstable; urgency=low
* Bring in package changes from experimental to unstable.
* debian/rules: Add a variable LDDEFS. It is consumed during linking
and is intended to suppress unnecessary linking.
2015-03-09 - Mats Erik Andersson <>
netkit-telnet (0.17-39) experimental; urgency=low
* Isolate support for USERVAR in a separate patch for easier use in
the variant package netkit-telnet-ssl.  Add LANG and LC_* to the
list of environment variables acceptable by the server.  Add support
in the client for exporting USERVAR classified variables.
+ debian/patches/120-some_protocol_refinement.diff: Updated.
+ debian/patches/124-support_uservar.diff: New file.
* Activate support for user variables in environment.  The server
accepts USERVAR classified variables, and the user agent announces
non-standard named variables as USERVAR.  Closes: #237268
+ debian/rules: Add '-DACCEPT_USERVAR' to CFLAGS and to CXXFLAGS. 
* Modify patch for direct use also with package netkit-telnet-ssl.
+ debian/patches/130-drain_input_from_child.diff: Updated.
2015-02-06 - Mats Erik Andersson <>
netkit-telnet (0.17-38) experimental; urgency=low
* Interchange maintainer and uploader!
* Refactor patch sets.
+ debian/patches/010-full_set_in_18.diff: Updated and renamed.
+ debian/patches/020-from_18_to_24.diff: Updated and renamed.
+ debian/patches/022-buffer_overflow_by_HOME.diff: New file.
+ debian/patches/024-can_2004-0911.diff: New file.
+ debian/patches/026-can_2005_0469.diff: New file.
* Repair broken host name check in telnetlogin.
+ debian/patches/140-telnetlogin_name_check.diff: New file.
* New switch '-N' for telnetd.  Taken from netkit-telnet-ssl.
+ debian/patches/142-numeric_hosts.diff: New file.
* Suppress a useless error message at package removal.
+ debian/telnetd.postrm: Updated.

See Also

Package Description
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texinfo-doc-nonfree_6.5.0-1_all.deb texinfo and info documentation that is non-free
texlive-base_2017.20180305-1_all.deb TeX Live: Essential programs and files
texlive-binaries_2017.20170613.44572-8build1_amd64.deb Binaries for TeX Live
texlive-fonts-recommended-doc_2017.20180305-1_all.deb TeX Live: Documentation files for texlive-fonts-recommended
texlive-latex-base-doc_2017.20180305-1_all.deb TeX Live: Documentation files for texlive-latex-base
texlive-latex-base_2017.20180305-1_all.deb TeX Live: LaTeX fundamental packages
texlive-latex-recommended-doc_2017.20180305-1_all.deb TeX Live: Documentation files for texlive-latex-recommended
texlive-latex-recommended_2017.20180305-1_all.deb TeX Live: LaTeX recommended packages
texlive-metapost-doc_2017.20180305-1_all.deb TeX Live: Documentation files for texlive-metapost
texlive-pictures-doc_2017.20180305-1_all.deb TeX Live: Documentation files for texlive-pictures
tftp-hpa_5.2+20150808-1ubuntu3_amd64.deb HPA's tftp client
tftpd-hpa_5.2+20150808-1ubuntu3_amd64.deb HPA's tftp server
tgt_1.0.72-1ubuntu1_amd64.deb Linux SCSI target user-space daemon and tools
thermald_1.7.0-5ubuntu1_amd64.deb Thermal monitoring and controlling daemon